Synthesis and spectral studies of some novel pyrazole derivatives from chalcones precursors
Chalcones 1a-c were prepared by a base catalyzed Claisen-Schmidt condensation reaction. The dibromoderivatives 2a-c were obtained by treatment of chalcones with bromine in chloroform. Pyrazoles 4a-e were obtained either by refluxing of dibromochalcones 2a
Hamada
experimental part
p. 327 - 334
(2010/07/18)
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